Type-writing attachment.



' D. vI. MAI-IER. TYPE WRITER ATTACHMENT. Arrmouiou FILED JAN. 2o, wos.

946,45L- PatentedJan 11,1910.

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AT TUR/VE YS' UNITED sTATEs PATENT oEEioE.

DAVID F. MAI-IER, 0F WATSONVILLE, CALIFORNIA.

TYPE-WRITER ATTACHMENT.

To all whom it may concern:

Be it known that I, DAviD F. MA1-IER, a citizen of the United States,and a resident of 7atsonville, in the county of Santal Cruz and State ofCalifornia, have invented certain new and useful Improvements in Type-Triter Attachments, of which the following is a specification.

This invention is an attachment for typewriters being especiallydesigned as a dictators alarm whereby the operator. of the machine mayindicate to the person dictating when he may proceed with the dictation;and the invention consists in certain novel constructions andcombinations of parts as will be hereinafter described and claimed.

In the drawings, Figure l is a side elevation of a typewriting machineprovided with my improvements. Fig. 2 is a detail sectional view of thealarm device shown in Fig. `l. Fig. 3 shows in elevation the bellstriking mechanism shown in Fig. l. Fig. 4 is a perspective view of asomewhat different construction from that shown in Figs. 1, 2 and 3,and, Fig. 5 is a detail View of a corner turning` device.

It is sometimes desirable to dictate directly to the typewriter operatorso that the letter may be written at once without the iutervention of astenographer. In so dictating to the machine, much. time is lost both bythe person dictating and 'the typewriter operator and I seek to devise asimple alarm device whereby the operator may indicate to the dictatorwhen the dictator may pro ceed with the dictation.

In the construction shown in Figs. l, 2 and 8, the bell A is supportedon the framing of the machine, and incloses a striking mechanismincluding a rack lever B, pivoted at B', and having a rack segmentoperating through a train of gears upon a revolving or oscillatinghammer carrier C, whose hammers C Vmay be moved outwardly by centrifugalaction to strike the bell, and

the lower arm of the lever B is connected with the rear end of a pushrod D, which eXtendsin the direction of length of the machine through aguide D near the front of the machine with its push button D2 in advanceof the machine as shown in Fig. l,

Specification of Letters Patent.

Patented Jan. 11, 1910.

Application filed January 20, 1909. Serial No. 473,230.

I or it may be readily operated by the machine operator to push back thelower end of the rack lever B and cause the bell to sound, thereturnmovement of the push rod D being effected by a spring D3 connected atone end with the machine, and at its other end with a hook D* on thepush rod.

In the construction shown in Fig. 4,1 emply a bell A10 supported by thetypewriting machine, a lever C10, and a push rod D10. The llever C10 ispivoted between its ends at C11, and has at its upper end a hammer C12to strike the bell A10 and adapted to fall by gravity away from the bellafter the stroke, and the slide rod D10 is secured at one end to thelower end of the lever C10 and extends thence through a guide on thetypewriter, to the front of the machine, and has a suitable button orhead D1L as shown in Fig. 4l, and a returning spring D12.

As shown in Fig. l, the lever and push rod are located at the side ofthe machine so they will not interfere with any of the other operations,and the slide rod will be in convenient reach of the operator so thealarm can be sounded without delay at any time. This avoids thenecessity of any conversation between the dictator and the operator andthe push rod can be quickly operated whenever desired.

Manifestly, the character of the bell may be varied and the particularmanner in which the operation of the push rod sounds the bell may bevaried without departing from some of the broad principles of myinvention.

A typewriter provided on its rear standard `at one side with a bell, alever pivoted between its ends and arranged at one end to operate inconnection with the bell, a slide rod connected with the other end ofthe lever, guide devices on the typewriter' machine for the slide rod,the latter extending from the lever toward the front of the machine andadapted for operation at the front end of the typewriter machine,substantially as set forth.

DAVID F. MAHER.

Witnesses GEORGE P. MARTIN, E. Y. DOLLENMAYER.

